San Diego County Property Tax Guide

How it works, Prop 13, assessments, exemptions

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How San Diego Property Tax Works

San Diego County property tax rate: ~1.20% (varies by location but this is baseline).

Example: $1,000,000 home = ~$12,500/year property tax.

But here's the catch: That 1.20% applies to your "assessed value," NOT market value. This is where Prop 13 comes in.

Prop 13: The Game-Changer (1978)

California's Prop 13 freezes your property tax assessment at time of purchase. It only increases 2% per year, regardless of market appreciation.

  • Buy in 2024 for $1M: Assessed value = $1M. Tax = $12,500/yr.
  • Home appreciates to $1.5M by 2034: Assessed value still ~$1.2M (only 2%/yr increases). Tax still ~$15,000/yr, not $18,750.
  • This is the secret to California's affordable property taxes for long-term owners.

Reassessment: When Taxes Jump

If you BUY a home, assessment resets to market value: You lose the 30+ years of frozen assessments the previous owner had.

Example: Previous owner bought 1990 at $300K, lived there 30 years. Assessment frozen at ~$450K (with 2% annual increases). You buy for $1.2M in 2024. Assessment resets to $1.2M. Your tax jumps from $5,600/yr (what previous owner paid) to $15,000/yr (what you pay).

This is why people stay in California homes forever โ€” moving resets your taxes.

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Prop 19 Basis Transfer (For 55+ Downsizers)

Prop 19 allows you to transfer your old assessment basis to a new home, even if more expensive. This partially avoids the reassessment jump.

Example: You sell Bay Area home (assessment $400K, market $2M). Buy San Diego home ($1M). Prop 19 transfers $400K basis to new home. Assessment = $400K, tax = $5,000/yr (instead of $12,500/yr).

This is why Prop 19 is so valuable for California downsizers.

San Diego County vs. Other Counties

  • All California: Same Prop 13 rules apply statewide.
  • San Diego County: Rate ~1.20%, very consistent across cities.
  • Some communities have CFD/Mello-Roos (additional assessment).

Key Insight for Retirees

If you buy and stay 20+ years, Prop 13 saves you hundreds of thousands in taxes. Your assessment grows only 2%/year while market grows 3โ€“5%/year.

If you buy and sell in 5โ€“7 years, reassessment means you overpaid for the home (you absorbed tax-resetting risk).

Plan to stay. Don't buy with exit strategy in mind.

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